Misti Mountain Observatory - Astronomy Pages
Galaxies
Nebulae
Star Clusters
Solar System
7" Refractor
Film
Equipment
Site
Home
  See our new iPad/iPhone game app, Tap Whimsy,
      an entertaining and challenging tap game that adapts to the player's skill level,
      providing a rewarding challenge for both novice and expert tappers of all ages!

M18

Click on photo for a larger image.
Right-Click and "Save Target As" here for the highest resolution version of this image.
Object Notes:
  • Constellation: Sagittarius
  • Location: RA: 18h 19m 54.0s Dec: -17d 08' 00" Epoch 2000
  • Size: 9.0 arc-minutes
  • Magnitude: 6.9
  • Type: Open Cluster
  • AKA: ngc6613
Instrument:
Ritchey-Chretien 32" Telescope
Focal Ratio:
f7.2 (prime focus)
Camera:
SBIG STL-11000 CCD camera
(See product review in July, 2004 issue of Sky & Telescope magazine.)
Exposure:
11 x 1 minutes Luminance unbinned
4 x 1 minutes each R/G/B, all unbinned
Guiding:
Off-Axis with STV Autoguider (Santa Barbara Instrument Group)
(See product review in May, 2003 issue of Astronomy magazine.)
See Photo/Guiding Equipment.
Date:
9/05/05
Post Processing:
CCDSoft, CCDSharp, MaxIM DL, Photoshop CS